Cut-out switch for series-parallel, controllers.



PELIOATIGE FILED SEPT. 7.1906.

circuit through coils Cul and Chaud causes switches S and SAA to close. Thenmin circuit is then establishtsl ss iollowsz-From the positive main through che switch S, the wire X, the contach'finger x, the strips a and 7J, the contact-nger 11, the resistance Rl, the wire l, the Contact fl of the cut-out switch F, the blade f2, the contact/"5, the field F1, the eriuature A1, und the rcversing switch W1 of the motor al, the contuctf oi the 'cutout switch F, the blade j the wire g, the switch S1, the Contact o1, thc wire p, 'the blade c2 oi' the cui out switchll, the Contact e5, the field F2, the armature A2, and ihe reversing switch w3 oi the inotor a`', vthe contact c4 oi the cut-out switch E, the blsde the wire Y, and lthe switch S to the negative moin. The two motors rtire then in series and in series with the resistance R1.

In position, 2 of the controller K, the connections are the same as in position l except that theresistance R2 is in parillel 'with the resistance R1.

In position 3, the resistance R1, ,R2 and R3 are iu parallel with one .another and in series with the uur tors, which are still connected in series.

ln position Li, the current 'passes from the finger 1r through vthe 'drum oi the controller K tothe linger r4, thence through the wire Lz, the contact o4, and the switch S* directly to the motors which are still connected in series. All oi the resistance is then short circuit ed ond thc motors should operate et full series speed.

In passing from position 4 to position 5, the switches Sl und S4 open and switches S2 and S3 simultaneously close, as described in my application, Serial No. The path of the main current in position 5 is as lollowsP-From the finger a: through the strips a, b, and c, the drum of the controller k, through the fingers and r2 and the resistance RI and R2 in parallel, to the blade f of the cutout switch F, thence through thoe blade j' and the Contact f5, through the ielcl Fl the lower contacts oi the reversing switch W1, the :irnmture A1, the upper contacts oi reversing switch W oi the motor a", to the Contact f 4, thence to the conu tact f l, to the lower terminal ol switch S, thence through thc switch S2, the contact fr7 and the wire u lo the supply main Y, thus completing the circuit through he motor al. A second path is also provided ier the current as follr \wsz-Froiu the rosistences lil and R2 in parallel, through the. wire Z to the lower 'terminal ci" 'the switch S3, through switch S3 and the coutoct o to the contact oi' the cut-out switch E, thc-ucc to Contact e", through the field F2, the lower contacts of the reversing switch W2, the armature A?, the upper contacts ol switch il to the contact e, thence through the blade e to the supply main Y, thus completing the circuit through the motor a3. The two motors are then in pam-Hel with each other and in series with the re 'stonces Rx and R2, which are also conneciedin parallel with each other.

In position 6, the connections remain the same as in position 5 with the exception-that the resistance R3 in parallel with the resistences R :and R?.

In position '7, the current passes direct y from the drum of the controller, through 'the finger 75 to the two motors in pomllel, the resistance being entirely shorty circuited. The motors, therefore, s'huhi operate ull speed.

.switch for pi'eventj: chen li l? lic liilou'n upwurtl rw ilint lili' (i5 blurlesj", fi, uml cui Azul y/l", the motor c will llc cut ozu, mul llucurrcuh lusufzul of il thi. motor will p through thc jumper ug the coumclsfT und f'". cut-out switch ll lic thrown uil'iwurl, Ille motor f." will if() he cutout mul [lu unipol' ,z" and c will lu,- Vsul litulcd therefor.

The contact limi iu :ulti to one cull ol' cucl, e swilch n Conner-ml to lic ieru mul o the uiusl c el' the cum/ui s' tact linger fr" is connected to lllc xcriuu-ul Uf" Il l," :ind lsei'orc current um plus: from lhaiugvr coils of 'the psizillcl bl uml il, musi 5;, through the lilo-lef ich 1f to thc hrmiunlj, 5,, thcce through biitde c of switch C lo Lcruiiuul af' mul thence 1o thc. coils C: und C.

eithcr oi the switches .C or l-` lle thrown over to cumuli thc corresponding motor, this circuit will he intl-w ruptcd so that the coi'cspguuling Vlug ou llw coulwllcr 55 cannot cruise actuation ol' ilu: parallel switches Hf null Si". Il' either motor llico is cui out, the pur-ulivi win-hos will hc rendered inoperative. lt will hc secu l'urlhcr that if switch l" he thrown up to cut oui the motor al, the Wire from the liuA the bltidef und thc i-friuiimlthe coils i." und C" ot thc switches Si und b". istrip', if thc swim-,l1 E he thrown up to cutout ilu, n'ioior a2, the path roin thc liugcr ci will lic :is lllwvs:- Through the `frire u io thc ilmlef und tlv cruxizlCL/Nl 95 of switch F, to the blade :unl the contact c" ol thc switch E, to the windings (Il :uid C ol' .switches 1S' :unal S4. it will he understood, therefore zit when either nioor cui out thc. contact linger 1 from the actuating coils o1' switclm-=.h und Si" uid is connected lo the actuating coils of *il und Sl. The connection ol' conto t hug io the uctuuiiug coils of switches und in, nel: llisturhcd hy thc ucivuution o1' cithci `tutsoul stitch. lh thcrcl'orc, follows that when cihcr motor is cut out, lh: switches S* j und Si rc alu closed iu uy ope Aion el' the controller K, the coils C1 mul lf i'cc'lrug currcu through the lingerf!" iu positions! m Ai of thc controlli-r, and through the linger 1? iu positions to '.7. ln posi tion fl, all oi' the resistance is cui: out, current p; from the {.luni of the controller through the linger r und the switch to whichever inoliu rcmuius in circuit. Since the linger r* remains in contact with the corespondinU strip ou the drum of the controller l in all subsequent positions of thc controller, lui-ther acum v,i tion ol? the controller produces no chungo iu motor connections, l`hcrei`ore, when either motor is cut-oui, the controller il' muy be operated just :is usuel, thc remaining motor being controlled by the resistzmccs lll,

2, oud R, reaching full spoed fit position It und op- 32() era/ting under the come conditions iu all subsequent positions of the controller l.

i claim-- l. 1n s series groups of uioi, motor or group lll i li, will lliA ,sfr-cu that, il'

is liscouuectcrl -parallel controller for two meier-s or u cur-oui' switch for cutting, 'out cue i motors. anni means controllori 'by seid ln thc ci ur` oi" the rcmuhr mo when it c;nf,:ollcr is op los position,

switches has been opened 1nd groups of motors,

rerzrted beyond thefuii series position.

3. In a series-parallel controller for two motors or groups of motors', an operating switch including cont-,iets

for connecting the motors in series and in parallel, n cutout switch'for each'motor, and means for preventing the opening of the series contacts when one yoi said cutout when the controller hns been operated beyond the full series position.

4. In a series-parallel controller for two motors or groups of motors, the combination of o. power-actunted switch lfor connecting the motors or groups 'of motors in series, o power-actuated parallel switch for connecting the motors or groups ot' motors in parallel, un operating switch, and :i cnt-out switch for cutting ont one motor or group ot motors, the connections being such that, when. suid cut-out switch is actuated to cnt out one motor or group of motors, said power-actuated series switch will be energized in my operaiim,V position of said controlling switch.'

.5. In a serierparullel controller for two motors, or the combination of a power-actuated series switch for connecting the motors or groups o! motorn -in series, n. poweractnatedparnllel switch for connecting the motors or groups ot motors in parnlleLwan opernting switch, nul n cutout switch for cutting out either motor or group! of motore, the connections being such that v bel nid cut-ont switch is actuated to cut out either motor or groups of motors, said pwer'actueted parallel switch cnn not ne energized.

G. In a series-parental controller for two motors or groups of motors, the combination ot' o power-uctuntcd switch for connecting the motors or :groups o? luoiors in series, a power-actuated switch for connec .ng said niotors or groups oi motors in parallel, au opcrutlng switch, und cut-ont switches for cutting out either motor or groups of motors, the connections neing such thnt, when l'the cut-out Switch is actuated to cut out either motor` or group of motors, s'nld power-uctrnlted series switch will be energized in operating position o said operating switch and said power-actuated parallel switch will not be energized in :my operating position ol' said operating switch.

'i'. in n Scriespurnilel controller for two motors or groups of inotorsfn controlling switch, moans controlled by salti switch for placing the motors in series, means con irolled hy said switch for placing the motors in parallel, n switch for cutting out one of the motors, alternate contucts for the cut/oui: svitch, n connection between one contact und the scid means for placing the motors in series, and connections from the remaining contact to the said means for placing the motors in Series and to that portion oi the controlling switch which controls the change of the motors troni series to pnrailel.

Signed at Cleveland, Ohio, this 24th day of September,

ARTHUR C. EASTWGUD.

Witnesses:

' C. W. Comsrocn,

S. L. himnos. 

